Neuronal interactions give rise to complex dynamics in cortical networks, often described in
terms of the diversity of activity patterns observed in a neural signal. Interestingly, the …

There is still controversy surrounding the definition and mechanisms of consciousness. The
constrained disorder principle (CDP) defines complex systems by their dynamic borders …

Nonoscillatory measures of brain activity such as the spectral slope and Lempel–Ziv
complexity are affected by many neurological disorders and modulated by sleep. A multitude …

Auditory processing and the complexity of neural activity can both indicate residual
consciousness levels and differentiate states of arousal. However, how measures of neural …

The human brain presents a heavily connected complex system. From a relatively fixed
anatomy, it can enable a vast repertoire of functions. One important brain function is the …

Multidimensional reconstruction of brain attractors from electroencephalography (EEG) data
enables the analysis of geometric complexity and interactions between signals in state …

Objective To investigate the changes in the wavelet entropy during wake and different sleep
stages in patients with insomnia disorder. Methods Sixteen patients with insomnia disorder …

The dorsal (DRN) and median (MRN) raphe are important nuclei involved in similar
functions, including mood and sleep, but playing distinct roles. These nuclei have a different …

Spectral analysis of electroencephalographic (EEG) data simplifies the characterization of
periodic band parameters but can obscure underlying dynamics. By contrast, reconstruction …

The transition from NREM to REM sleep is considered a transitional or intermediate stage
(IS), characterized by high amplitude spindles in the frontal cortex and theta activity in the …